Matters Related With the Structure of Sand Rotary Dryer

     Date: 13-08-2015     From: Fote Machinery     Author: Fote Machinery

Sand rotary dryer is mainly applied to drying materials like river sand, dry-mixed mortar, yellow sand, cement clinker, clay, coal gangue, mixtures, coal ash, gypsum, iron powder and other raw materials, widely used in building materials, chemical industry, casting industry and other industries. Since materials with high stiffness for making the box cross-section of sand rotary dryer are used rationally, heat dissipation condition of sand dryer machine is relatively good during the working process. However, owing to the complicated structure of box cross-section, defects like cracks and sand inclusion are easy to appear during the process of forging or cooling.

The cross-section of rolling ring in rotary sand dryer may be filled-rectangle with simple structure and small temperature stress. This kind of rolling ring is more and more used in large-sized calcining kiln and cement kiln. The height of fire barrier can influence the flow direction of flue gas and make the thermal barrier of comb board stabilized in a limited place. Therefore, the height of fire barrier should be in consistent with the length of comb board. The height of fire barrier is commonly designed at about 200mm-400mm.

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